克氏原螯虾的入侵生态学研究进展

Research progress in invasion ecology of Procambarus clarkia

克氏原螯虾(Procambarus clarkii)原产于美国南部和墨西哥北部,是一个著名入侵物种,作为一种水产经济资源物种在世界各地扩散。克氏原螯虾抗逆性强,所具有的广泛生境适应性、生长迅速、高生殖率等特点使它们迅速建立野生种群。近10余年的研究认为,克氏原螯虾通过捕食和资源竞争等机制严重威胁引入地的水生植物、无脊椎动物、两栖类等的生存,显著降低引入地的生物多样性。当前,由于克氏原螯虾的经济价值高,它会借助于人力的作用而继续扩散。为认清和减少克氏原螯虾对引入地的生态影响,应加强以下方面的研究:1)在中国开展克氏原螯虾的生态危害的调查和研究;2)克氏原螯虾种群调节和控制对策研究;3)被入侵地的生态恢复工作。

Procambarus clarkii is native to southern USA and northern Mexico, and regarded as one of the well-known invasive species. As one of the fishery economic resources, it has spread around the world. Owing to its wide habitat adaptability, rapid growth, and high reproduction rate, P. clarkii can establish wild populations rapidly. The studies in recent decade indicated that P. clarkii invasion had given great threat on the survival of native aquatic plants, amphibian, and aquatic invertebrate, and decreased the local biodiversity via predation and resource competition. Since P. clarkii is one kind of important fishery species, it will continue to spread with the help of human. In order to understand and to decrease the ecological impact of P. clarkii＇s invasion on local habitats, following studies are urgent： 1 ） ecological damage of P. clarkia in China, 2） population regulation and control of P. clarkia, and 3 ） ecological restoration on damaged habitats by P. clarkii.